network_state.cc revision a1401311d1ab56c4ed0a474bd38c108f75cb0cd9 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chromeos/network/network_state.h"
6
7#include "base/strings/stringprintf.h"
8#include "base/values.h"
9#include "chromeos/network/network_event_log.h"
10#include "chromeos/network/network_profile_handler.h"
11#include "chromeos/network/network_util.h"
12#include "chromeos/network/shill_property_util.h"
13#include "third_party/cros_system_api/dbus/service_constants.h"
14
15namespace {
16
17const char kErrorUnknown[] = "Unknown";
18
19bool ConvertListValueToStringVector(const base::ListValue& string_list,
20                                    std::vector<std::string>* result) {
21  for (size_t i = 0; i < string_list.GetSize(); ++i) {
22    std::string str;
23    if (!string_list.GetString(i, &str))
24      return false;
25    result->push_back(str);
26  }
27  return true;
28}
29
30bool IsCaCertNssSet(const base::DictionaryValue& properties) {
31  std::string ca_cert_nss;
32  if (properties.GetStringWithoutPathExpansion(shill::kEapCaCertNssProperty,
33                                               &ca_cert_nss) &&
34      !ca_cert_nss.empty()) {
35    return true;
36  }
37
38  const base::DictionaryValue* provider = NULL;
39  properties.GetDictionaryWithoutPathExpansion(shill::kProviderProperty,
40                                               &provider);
41  if (!provider)
42    return false;
43  if (provider->GetStringWithoutPathExpansion(
44          shill::kL2tpIpsecCaCertNssProperty, &ca_cert_nss) &&
45      !ca_cert_nss.empty()) {
46    return true;
47  }
48  if (provider->GetStringWithoutPathExpansion(
49          shill::kOpenVPNCaCertNSSProperty, &ca_cert_nss) &&
50      !ca_cert_nss.empty()) {
51    return true;
52  }
53
54  return false;
55}
56
57}  // namespace
58
59namespace chromeos {
60
61NetworkState::NetworkState(const std::string& path)
62    : ManagedState(MANAGED_TYPE_NETWORK, path),
63      connectable_(false),
64      prefix_length_(0),
65      signal_strength_(0),
66      activate_over_non_cellular_networks_(false),
67      cellular_out_of_credits_(false),
68      has_ca_cert_nss_(false) {
69}
70
71NetworkState::~NetworkState() {
72}
73
74bool NetworkState::PropertyChanged(const std::string& key,
75                                   const base::Value& value) {
76  // Keep care that these properties are the same as in |GetProperties|.
77  if (ManagedStatePropertyChanged(key, value))
78    return true;
79  if (key == shill::kSignalStrengthProperty) {
80    return GetIntegerValue(key, value, &signal_strength_);
81  } else if (key == shill::kStateProperty) {
82    return GetStringValue(key, value, &connection_state_);
83  } else if (key == shill::kConnectableProperty) {
84    return GetBooleanValue(key, value, &connectable_);
85  } else if (key == shill::kErrorProperty) {
86    if (!GetStringValue(key, value, &error_))
87      return false;
88    // Shill uses "Unknown" to indicate an unset error state.
89    if (error_ == kErrorUnknown)
90      error_.clear();
91    if (!error_.empty())
92      last_error_ = error_;
93    return true;
94  } else if (key == IPConfigProperty(shill::kAddressProperty)) {
95    return GetStringValue(key, value, &ip_address_);
96  } else if (key == IPConfigProperty(shill::kGatewayProperty)) {
97    return GetStringValue(key, value, &gateway_);
98  } else if (key == IPConfigProperty(shill::kNameServersProperty)) {
99    const base::ListValue* dns_servers;
100    if (!value.GetAsList(&dns_servers))
101      return false;
102    dns_servers_.clear();
103    ConvertListValueToStringVector(*dns_servers, &dns_servers_);
104    return true;
105  } else if (key == IPConfigProperty(shill::kPrefixlenProperty)) {
106    return GetIntegerValue(key, value, &prefix_length_);
107  } else if (key == IPConfigProperty(
108      shill::kWebProxyAutoDiscoveryUrlProperty)) {
109    std::string url_string;
110    if (!GetStringValue(key, value, &url_string))
111      return false;
112    if (url_string.empty()) {
113      web_proxy_auto_discovery_url_ = GURL();
114    } else {
115      GURL gurl(url_string);
116      if (!gurl.is_valid()) {
117        web_proxy_auto_discovery_url_ = gurl;
118      } else {
119        NET_LOG_ERROR("Invalid WebProxyAutoDiscoveryUrl: " + url_string,
120                      path());
121        web_proxy_auto_discovery_url_ = GURL();
122      }
123    }
124    return true;
125  } else if (key == shill::kActivationStateProperty) {
126    return GetStringValue(key, value, &activation_state_);
127  } else if (key == shill::kRoamingStateProperty) {
128    return GetStringValue(key, value, &roaming_);
129  } else if (key == shill::kSecurityProperty) {
130    return GetStringValue(key, value, &security_);
131  } else if (key == shill::kEapMethodProperty) {
132    return GetStringValue(key, value, &eap_method_);
133  } else if (key == shill::kUIDataProperty) {
134    scoped_ptr<NetworkUIData> new_ui_data =
135        shill_property_util::GetUIDataFromValue(value);
136    if (!new_ui_data) {
137      NET_LOG_ERROR("Failed to parse " + key, path());
138      return false;
139    }
140    ui_data_ = *new_ui_data;
141    return true;
142  } else if (key == shill::kNetworkTechnologyProperty) {
143    return GetStringValue(key, value, &network_technology_);
144  } else if (key == shill::kDeviceProperty) {
145    return GetStringValue(key, value, &device_path_);
146  } else if (key == shill::kGuidProperty) {
147    return GetStringValue(key, value, &guid_);
148  } else if (key == shill::kProfileProperty) {
149    return GetStringValue(key, value, &profile_path_);
150  } else if (key == shill::kActivateOverNonCellularNetworkProperty) {
151    return GetBooleanValue(key, value, &activate_over_non_cellular_networks_);
152  } else if (key == shill::kOutOfCreditsProperty) {
153    return GetBooleanValue(key, value, &cellular_out_of_credits_);
154  }
155  return false;
156}
157
158bool NetworkState::InitialPropertiesReceived(
159    const base::DictionaryValue& properties) {
160  NET_LOG_DEBUG("InitialPropertiesReceived", path());
161  bool changed = UpdateName(properties);
162  bool had_ca_cert_nss = has_ca_cert_nss_;
163  has_ca_cert_nss_ = IsCaCertNssSet(properties);
164  changed |= had_ca_cert_nss != has_ca_cert_nss_;
165  return changed;
166}
167
168void NetworkState::GetProperties(base::DictionaryValue* dictionary) const {
169  // Keep care that these properties are the same as in |PropertyChanged|.
170  dictionary->SetStringWithoutPathExpansion(shill::kNameProperty, name());
171  dictionary->SetStringWithoutPathExpansion(shill::kTypeProperty, type());
172  dictionary->SetIntegerWithoutPathExpansion(shill::kSignalStrengthProperty,
173                                             signal_strength_);
174  dictionary->SetStringWithoutPathExpansion(shill::kStateProperty,
175                                            connection_state_);
176  dictionary->SetBooleanWithoutPathExpansion(shill::kConnectableProperty,
177                                             connectable_);
178
179  dictionary->SetStringWithoutPathExpansion(shill::kErrorProperty, error_);
180
181  // IPConfig properties
182  base::DictionaryValue* ipconfig_properties = new base::DictionaryValue;
183  ipconfig_properties->SetStringWithoutPathExpansion(shill::kAddressProperty,
184                                                     ip_address_);
185  ipconfig_properties->SetStringWithoutPathExpansion(shill::kGatewayProperty,
186                                                     gateway_);
187  base::ListValue* name_servers = new base::ListValue;
188  name_servers->AppendStrings(dns_servers_);
189  ipconfig_properties->SetWithoutPathExpansion(shill::kNameServersProperty,
190                                               name_servers);
191  ipconfig_properties->SetStringWithoutPathExpansion(
192      shill::kWebProxyAutoDiscoveryUrlProperty,
193      web_proxy_auto_discovery_url_.spec());
194  dictionary->SetWithoutPathExpansion(shill::kIPConfigProperty,
195                                      ipconfig_properties);
196
197  dictionary->SetStringWithoutPathExpansion(shill::kActivationStateProperty,
198                                            activation_state_);
199  dictionary->SetStringWithoutPathExpansion(shill::kRoamingStateProperty,
200                                            roaming_);
201  dictionary->SetStringWithoutPathExpansion(shill::kSecurityProperty,
202                                            security_);
203  dictionary->SetStringWithoutPathExpansion(shill::kEapMethodProperty,
204                                            eap_method_);
205  // Proxy config and ONC source are intentionally omitted: These properties are
206  // placed in NetworkState to transition ProxyConfigServiceImpl from
207  // NetworkLibrary to the new network stack. The networking extension API
208  // shouldn't depend on this member. Once ManagedNetworkConfigurationHandler
209  // is used instead of NetworkLibrary, we can remove them again.
210  dictionary->SetStringWithoutPathExpansion(
211      shill::kNetworkTechnologyProperty,
212      network_technology_);
213  dictionary->SetStringWithoutPathExpansion(shill::kDeviceProperty,
214                                            device_path_);
215  dictionary->SetStringWithoutPathExpansion(shill::kGuidProperty, guid_);
216  dictionary->SetStringWithoutPathExpansion(shill::kProfileProperty,
217                                            profile_path_);
218  dictionary->SetBooleanWithoutPathExpansion(
219      shill::kActivateOverNonCellularNetworkProperty,
220      activate_over_non_cellular_networks_);
221  dictionary->SetBooleanWithoutPathExpansion(shill::kOutOfCreditsProperty,
222                                             cellular_out_of_credits_);
223}
224
225bool NetworkState::RequiresActivation() const {
226  return (type() == shill::kTypeCellular &&
227          activation_state() != shill::kActivationStateActivated &&
228          activation_state() != shill::kActivationStateUnknown);
229}
230
231bool NetworkState::IsConnectedState() const {
232  return StateIsConnected(connection_state_);
233}
234
235bool NetworkState::IsConnectingState() const {
236  return StateIsConnecting(connection_state_);
237}
238
239bool NetworkState::IsPrivate() const {
240  return !profile_path_.empty() &&
241      profile_path_ != NetworkProfileHandler::GetSharedProfilePath();
242}
243
244std::string NetworkState::GetDnsServersAsString() const {
245  std::string result;
246  for (size_t i = 0; i < dns_servers_.size(); ++i) {
247    if (i != 0)
248      result += ",";
249    result += dns_servers_[i];
250  }
251  return result;
252}
253
254std::string NetworkState::GetNetmask() const {
255  return network_util::PrefixLengthToNetmask(prefix_length_);
256}
257
258bool NetworkState::UpdateName(const base::DictionaryValue& properties) {
259  std::string updated_name =
260      shill_property_util::GetNameFromProperties(path(), properties);
261  if (updated_name != name()) {
262    set_name(updated_name);
263    return true;
264  }
265  return false;
266}
267
268// static
269bool NetworkState::StateIsConnected(const std::string& connection_state) {
270  return (connection_state == shill::kStateReady ||
271          connection_state == shill::kStateOnline ||
272          connection_state == shill::kStatePortal);
273}
274
275// static
276bool NetworkState::StateIsConnecting(const std::string& connection_state) {
277  return (connection_state == shill::kStateAssociation ||
278          connection_state == shill::kStateConfiguration ||
279          connection_state == shill::kStateCarrier);
280}
281
282// static
283std::string NetworkState::IPConfigProperty(const char* key) {
284  return base::StringPrintf("%s.%s", shill::kIPConfigProperty, key);
285}
286
287}  // namespace chromeos
288